Cell birth and death Flashcards
exam 2 (29 cards)
loss of proliferation controls only
Benign
loss of both proliferation and positional controls
malignant
proliferation continues even in the absence of an external stimulus
neoplasia
altered proliferative states of cells that are reversible: proliferation and tissue damage stops when the stimulus that provoked it is removed
regeneration
hyperplasia
metaplasia
dysplasia
neoplasia
irreversible proliferation of cells
two major forms of neoplasia
benign
malignant
least perturbed state
regeneration
following balloon angioplasty what happens?
endothelial cell injury
endothelial cells regenerate after a balloon angioplasty
to re-from the lumenal lining
increase in the number of cells in the tissue but the cells are fully functional
Hyperplasia
Grave’s disease
hyperthyroidism
hyperthyroidism is an example of
hyperplesia
_______ _____ in Bone Marrow following Blood loss
Erythrocyte hyperplasia
replacement of one cell type with another cell type
metaplasia
_____ of __________ _____ cells during chronic pelvic inflammatory disease
metaplasia of endocervical epithelial cells
frequent pre-courser to cancer
Dysplasia
factoid of dysplasia
it can be stopped but not very reversible to original cell state
loss of orientation in the tissue, pleotropic cells (vary of sizes and nucleic)
dysplasia
large nuclei is indicative of ?
high metabolic activity
examples of dyplasia
pap smear and moles
example of a benign neoplasia
uterine fibroid
what are the symptoms of fibroids?
abnormal and heavy bleeding; pain and pressure; fertility problems
malignant neoplasia
cancer
example of a positional control of proliferation
lumen of the Gut